The Zelisko VMA is an active high-precision voltage amplifier with 3 channels. In combination with Zelisko low-power voltage sensors it converts the output voltages from 3.25/?3 V to 100/?3 V or 110/?3 V. Therefore, the use of Zelisko sensor technology is no longer limited to metering equipment with built-in low-voltage inputs.
MORE FLEXIBILITY IN SUBSTATIONS.
An easy integration of LPVT technology with existing equipment directly supports the modernization of power-grids.
Extended compatibility is achieved through amplification of the Zelisko sensors’ secondary output voltage. This allows the usage of energy meters or other measurement appliances designed for signal levels of conventional instrument transformers.
Advantages
- Precise metering of voltage signals up to class 0.2
- Immediate operation without additional on-site calibration
- Independent amplification of up to three sensor signals
- Simple installation on DIN top hat rails
- No requirement for equipment with low-voltage input
UNLOCKING THE FULL POTENTIAL OF ZELISKO LPVT HIGH-PRECISION MEASUREMENT.
Through combination of Zelisko low-voltage sensors with the VMA voltage amplifier the sensor technology can
be applied for tariff metering.
Advantages
- Precise current metering according to IEC 61869-2 accuracy classes 0.2 or 0.2S
- Precise voltage metering according to IEC 61869-11 accuracy class 0.2
- Immediate operation without additional on-site calibration
- Attestation of accuracy through calibrated measurement and calibration certificate according to ISO/IEC 17025
- Easy connection to established electric meter types
| Auxiliary supply voltage: | |
| DC | 24V ± 10% |
| Power consumption | 1.2 W (max. 15 W) |
| Temperature range: | |
| Operation | from -10° C to +55° C |
| Storage | from -25° C to +70° C |
| Housing: | Polyamide housing for mounting on DIN top hat rails |
| Dimensions | 67.5 x 99 x 114.5 mm (W / H / D) |
| Protection class | IP20 |
| Inputs: |
| Up to 3 inputs for Zelisko voltage sensors (according to IEC 61869-11) |
| Max. input voltage of 190% * Ur |
| Distinct assignment of every sensor to a specific channel |
| Outputs: |
| Up to 3 outputs for AC voltage pre-configured to 100/?3 V of 110/?3 V |
| Rated output of up to 1 VA per channel |
| Notifications: |
| 1 LED signals system failure |
